ENTOZOA IN THE URINARY ORGANS. Il7 



doubtless due to the circumstance that the function 

 of eliminatino; the urine is transferred, and almost 

 entirely limited, to the unaffected kidney. 



According to the cases which have been observed, 

 a peculiar undulatory movement which is felt only in 

 one renal region, is diagnostic of the presence of the 

 strongylus gigas. Sometimes these movements pro- 

 duce violent pain in the loin ; and, as long as the 

 ureter remains permeable, sanguinolent or purulent 

 urine is voided. When it has escaped into the ureter, 

 it causes retention of urine and enlargement of the 

 kidney ; when it has arrived into the bladder, it 

 gives rise to various complications analogous to those 

 which are caused by the existence of other foreign 

 bodies in this viscus. 



Many of these symptoms resemble those which 

 are present in cases of renal calculi ; but, as 

 Dr. Davaine observes, the diagnosis may be com- 

 pleted, in a suspected case of strongylus, if the ureter 

 remains permeable, by a microscopical examination 

 of the urine, which may lead to the discovery of the 

 ova of the entozoon. These are of an oval shape 

 and brownish colour, and are very abundant ; they 

 measure tthj o^^^ ^f ^^ m.'i^ in length, and about half 

 of this in breadth. 



When the nature of the ova has been ftdly 

 determined, and the symptoms of a foreign body in 

 the kidney or in the bladder also show that a 

 strongylus exists in one of those viscera, incision into 

 the kidney will be indicated when it is in that viscus, 

 if the worm cannot be dislodged by diuretics, and it 

 will be advisable to remove the entozoon from the 



